Big bables: The National Health Statistics Reports described a study in which a sample of...
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Big bables: The National Health Statistics Reports described a study in which a sample of 325 one-year-old baby boys were weighed. Their mean weight was 24.9 pounds with standard deviation 5.3 pounds. A pediatrician claims that the mean weight of one-year-old boys is less than 25 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the a=0.10 level of significance and the P-value method with the TI-84 Plus calculator.
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